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From
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To
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Geolocation
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Author - title
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Year
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| details | Middle Callovian | Late Callovian | England(Cambridgeshire) | Courtinat,B. Review of the dinoflagellate cyst Stephanelytron Sarjeant 1961 emend | 1999 |
| details | Late Callovian | Early Oxfordian | France(Alpes,Cote d'Azur) | Courtinat,B. Review of the dinoflagellate cyst Stephanelytron Sarjeant 1961 emend | 1999 |